ProtonMail → CyberMail
Proton encrypts. We encrypt + give you a free AI brain, your notes, wallet messaging, and physical mail. Their Scribe AI is paid and cloud-only.
Skiff shut down · June 2024
Notion bought Skiff. Skiff died. You — the people who actually cared about encrypted email with a crypto sign-in — got an eviction notice. We built the successor. Import takes 30 seconds. Year 1 is 50% off.
Promo applied automatically: SKIFF-50 · 50% off Year 1
| Feature | Skiff · defunct 2024 | CyberMail |
|---|---|---|
| End-to-end encrypted email | Yes | Yes |
| Crypto / wallet sign-in We support 500+ wallets | Yes | Yes |
| Notes (Obsidian-style with wikilinks) Markdown + wikilinks + tags + backlinks | Partial | Yes |
| Calendar v1.2 — shipping Q3 | Yes | Partial |
| On-device AI brain | — | Yes |
| Free LLM (no AI bill) Groq · OpenRouter · Ollama auto-routing | — | Yes |
| Voice in / voice out | — | Yes |
| XMTP wallet-to-wallet chat | Partial | Yes |
| Digital postal (real US street address) | — | Yes |
| Phishing detection | Yes | Yes |
| Burner addresses | Yes | Yes |
| Self-destruct + view-once | Yes | Yes |
| Schedule send · read receipts | Yes | Yes |
| Custom domains | Yes | Yes |
| Still in business Skiff was acquired by Notion and shut down in 2024. | Shut down | Yes |
Import flow
If you exported your Skiff archive before the June 2024 shutdown, you have an .mbox file. If you missed the window, our import flow accepts any mbox export from any IMAP client.
We use the same crypto sign-in pattern Skiff did. Your wallet address becomes your identity. We migrate your Skiff alias as a CyberMail alias automatically.
Settings → Import → Skiff (mbox). 30 seconds. The CyberBrain re-indexes your archive in the background while you start using the inbox.
Skiff refugees get a launch-week welcome from us — bring your data and your wallet.
CyberMail is a drop-in upgrade from any of these.
ProtonMail → CyberMail
Proton encrypts. We encrypt + give you a free AI brain, your notes, wallet messaging, and physical mail. Their Scribe AI is paid and cloud-only.
Gmail → CyberMail
Google reads your email. We don't. Plus you keep the AI features Gemini gave you — running locally or on free-tier LLMs.
Hey → CyberMail
Hey is one fixed product. Cybrmail adds AI brain, notes, voice, and wallet sign-in on top of secure email.
Get on the list. The first 10,000 mailers get a permanent @cybrmail.net alias of their choice and 50% off Year 1.
No spam. We use the same inbox you use to opt out — yours.